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J. H. ROHME. I MEGHANISM FOR GONTROLLING STEAM DRIVEN SEWING MACHINES..No. 326,457. Patented Sept. 15 188 \J mu w R J INVENTOR:

ATTORNEYS.

WITNESSES N. PETERS Plwto-Lflhognphur. Washington, 0.0

ijNlTED ST TES PATENT Fries.

JAMES H. ROHME, OF NEVVBURG, NEWV YORK, ASSIGNOR TO HIMSELF, JAMES ORR,OF SAME PLACE, CLINTON W. S\/VEET, OF NEW YORK, AND CLAYTON E. SWEET, OFXVAPPINGERS FALLS, N. Y.

MECHANISM FOR CONTROLLING STEAM-DRIVEN SEWING-MACHINES.

SPECEFICATION forming part of Letters Patent No. 326,457, datedSeptember 15, 1885.

Application filed July 2?, 18P5 (No model.) I

To all 1072,0717 it may concerw Be it known that 1, JAMES H. Rornun, ofNewburg, in the county of Orange and State New York, have inventedcertain new and useful Improvements in Controlling Mechanisms forSteam-Driven Sewing-Machines, of which the following is a full, clear,and exact description.

Reference is to be had to the accompanying drawings, forming part ofthis specification, in which similar letters of reference indicatecorresponding parts in all the figures.

Figure 1 is a sectional side elevation of my improvement shown asapplied to a sewingmachine. Fig. 2 is a sectional end elevation of thesame, taken through the broken line or war, Fig. 1. Fig. 3 is a planview of a part of the same, showing the mechanism for throwing thedriving-pulley into and out of gear. Fig. 4 is a side elevation of thedriving-pulley, the driving-shaft being shown in section.

The object of this invention is to provide controlling mechanisms forsteamdriven sewing-machines, by the use of which the said machines canbe instantly started or stopped, and their speed can be readilycontrolled.

The invention consists in the construction and combination of thevarious parts of the mechanism, as will be hereinafter fully decribed,and then claimed.

A represents a sewing-machine; B, the sewinginachine table, and O theframe. D is the driving-shaft, to which motion isgiven from asteam-engine in the ordinary manner.

To a standard, E, secured to the floor beneath the rear part of thetable B, is secured a bearing, F, which is provided with a sleeve, G,upon which revolves thehub of the driving-pulley H. Upon the side of thepulley H is formed an annular rib or-flange, I, which enters an annulargroove, J, in the side of a friction-Wheel, K, the hub of which issecured to the driving-shaft D by set-screws L, or other suitable means.The face of the pulley H is grooved to receive the driving-belt M, whichalso passes around a pulley, N, attached to the shaft of thesewing-machine A. The hub of the driving-pulley H projects upon only oneside of the said pulley, and upon it, near its outer end, is formed anannular rib or flange, O, upon which.at the op posite sides of the saidhub, rest the slotted heads of two pivots or pins, P. The pins 1? arepivoted to the upper ends of two arms,Q, which project upon the oppositesides of the hub of the drive-pulley H. The lower ends of the arms Q areformed upon the shaft R, which rocks in hearings in the upper ends ofthe standards S, attached to the floor of the room. Upon the shaft D,and projecting at right angles with the arms Q,is formed, or to it isrigidly attached, an arm, '1, to the outer end of which is hinged theupper end of a connecting-rod. U. The lower end of the connecting-rod Uis hinged to the end of the treadle V, which is fulcruined at or nearits center to a rod, W, attached to the frame 0, so that the operator byoperating the treadle V can throw the pulley H into or out of gear withthe friction-wheel K, or so adjust the said pulley that it will bedriven at any de sired speed.

Upon the shaft R is formed, or to it is rigidly attached,an arm, X,whichprojects downward at such an inclination that when the said shalt R isrock-ed to throw the pulley H out of gear with the friction-wheel K theend of the arm X will be brought into contact with the side of the saidpulley H, and will act as a brake to instantly stop its movement. Whenthe shaft R is rocked to throw the pulley H into gear with thefriction-Wheel K, the brake-arm X .Will be withdrawn from the saidpulley H. \Vith this construction, by operating the treadle V theoperator can stop the pulley H, and withit the sewing-machine,instantly, and can instantly start the said pulley and sewing-machine atany desired speed.

Having thus described my invention, what I claim as new, and desire tosecure by Letters Patent, is

1. The combination,with asewing-machine, A, having pulley N and thedriving-shaft D, of the friction-wheel K,having annular groove J, thepulley H, connected with the pulleyN by a belt,1 \/I, and having anannular flange, I,

H and the rock-shaft R, connected with the said pulley by the arms andpins QP, and with the treadle V by the arm and rod T U, 15 of thebrake-arin X, substantially as herein shown and described,whereby thesaid pulley will be instantly stopped when thrown out of gear with itsfriction-wheel, as set forth.

JAMES H. ROHME.

Witnesses:

JOHN M. PoLLocK, ROBERT BOYD, Jr.

